Adobe ADBCD17648MC 사용자 설명서

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USING PHOTOSHOP ELEMENTS 8
Cropping, resizing, retouching, and transforming photos
Last updated 7/26/2011
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Make sure that Resample Image is deselected. If deselected, you can change the print dimensions and resolution 
without changing the total number of pixels in the image, but the image may not keep its current proportions.
Note: Resample Image must be selected in order to use the Constrain Proportions. Resample Image and Constrain 
Proportions must be selected to use Scale Style functions.
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To maintain the current aspect ratio, select Constrain Proportions. This option automatically updates the width as 
you change the height, and vice versa.
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Under Document Size, enter new values for the height and width. If desired, choose a new unit of measurement. 
For Width, the Columns option uses the width and gutter sizes specified in the Units & Rulers preferences. 
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For Resolution, enter a new value. If desired, choose a new unit of measurement, and then click OK.
To return to the original values displayed in the Image Size dialog box, use Option
  and 
  click  Reset. 
Resample an image
Changing the pixel dimensions of an image is called resampling. Resampling affects not only the size of an image 
on-screen, but also its image quality and its printed output—either its printed dimensions or its image resolution. 
Resampling can degrade image quality. When you downsample, meaning that you decrease the number of pixels in 
your image, information is removed from the image. When you upsample, or increase the number of pixels in your 
image, new pixels are added based on the color values of existing pixels, and the image loses some detail and sharpness.
Resampling an image
A. Image downsampled  B. Original image  C. Image upsampled